I agree with Ponderer's post about wish that your current bf had some of the same qualities as Mr. Left Behind.

However, I also believe that your subconscious mind is wondering what could have been with Mr. Left Behind.

Please do not be offended, but you seem to try and "over sell" your current bf, which gives me some indication that you know you are wondering about Mr. Left Behind and are having trouble admitting that to yourself. Thus, your dreams are reminding you that you need to deal with that issue and get past it in order to be completely happy with your current bf.

Don't worry though, I believe everyone wonders about someone who they were never actually with.